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Keyword: quasars

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  • Quasars: Brightest Objects in the Universe

    02/24/2018 11:16:03 AM PST · by Simon Green · 12 replies
    Space.com ^ | 02/23/18 | Nola Taylor
    (The Hubble Space Telescope captured this image of ancient and brilliant quasar 3C 273, which resides in a giant elliptical galaxy in the constellation of Virgo. Its light has taken some 2.5 billion years to reach us. Despite this great distance, it is still one of the closest quasars to our home. It was the first quasar ever to be identified, and was discovered in the early 1960s by astronomer Allan Sandage.) Shining so brightly that they eclipse the ancient galaxies that contain them, quasars are distant objects powered by black holes a billion times as massive as our...
  • NASA’s Hubble Finds Giant Halo Around the Andromeda Galaxy

    05/09/2015 6:27:38 AM PDT · by BenLurkin · 25 replies
    nasa ^ | Rob Gutro
    Scientists using NASA’s Hubble Space Telescope have discovered that the immense halo of gas enveloping the Andromeda galaxy, our nearest massive galactic neighbor, is about six times larger and 1,000 times more massive than previously measured. The dark, nearly invisible halo stretches about a million light-years from its host galaxy, halfway to our own Milky Way galaxy. This finding promises to tell astronomers more about the evolution and structure of majestic giant spirals, one of the most common types of galaxies in the universe. “Halos are the gaseous atmospheres of galaxies. The properties of these gaseous halos control the rate...
  • Black hole 12bn times more massive than sun is discovered

    02/28/2015 10:32:14 AM PST · by Ernest_at_the_Beach · 60 replies
    theguardian.com ^ | Feb 25, 2015 | Press Association
    Scientists name new ‘object’ SDSS J0100+2802 and say it is 12.8bn light years from Earth and was formed just 900m years after the Big Bang *************************************************************A monster black hole powering “the brightest lighthouse in the distant universe” has been discovered that is 12bn times more massive than the sun, scientists have revealed.The extraordinary object is at the centre of a quasar - an intensely powerful galactic radiation source - with a million billion times the sun’s energy output.For years the nature of quasars, discovered in 1963, remained a mystery. Today scientists believe they are generated by matter heating up as...
  • Spooky Alignment of Quasars Across Billions of Light-years — Science Release — ESO1438

    11/25/2014 10:36:03 PM PST · by Swordmaker · 34 replies
    VLT reveals alignments between supermassive black hole axes and large-scale structure New observations with ESO’s Very Large Telescope (VLT) in Chile have revealed alignments over the largest structures ever discovered in the Universe. A European research team has found that the rotation axes of the central supermassive black holes in a sample of quasars are parallel to each other over distances of billions of light-years. The team has also found that the rotation axes of these quasars tend to be aligned with the vast structures in the cosmic web in which they reside.See Full Size Photo Quasars are galaxies with...
  • Massive Quasar Cluster Refutes Core Cosmology Principle (article)

    01/22/2013 9:52:44 AM PST · by fishtank · 25 replies
    Institute for Creation Research ^ | January 18, 2013. | Brian Thomas
    Massive Quasar Cluster Refutes Core Cosmology Principle by Brian Thomas, M.S. * Astronomers recently found a distant collection of quasars. But those quasars shouldn’t exist. And while they certainly appear connected, they’re spread too far across space for standard secular models of the structure and origin of the universe to accommodate. “It is the largest structure ever seen in the entire universe,” according to astrophysicist Roger Clowes from the University of Central Lancashire.1 Clowes led a team of researchers, who published their discovery in The Monthly Notices of the Royal Astronomical Society,2 in analyzing data from the Sloan Digital Sky...
  • Astronomers Find Largest, Oldest Mass of Water in Universe

    07/22/2011 8:44:00 PM PDT · by NormsRevenge · 43 replies
    Space.com ^ | 7/22/11
    Astronomers have discovered the largest and oldest mass of water ever detected in the universe — a gigantic, 12-billion-year-old cloud harboring 140 trillion times more water than all of Earth's oceans combined. The cloud of water vapor surrounds a supermassive black hole called a quasar located 12 billion light-years from Earth. The discovery shows that water has been prevalent in the universe for nearly its entire existence, researchers said. "Because the light we are seeing left this quasar more than 12 billion years ago, we are seeing water that was present only some 1.6 billion years after the beginning of...
  • The First Triple Quasar

    01/15/2007 3:15:39 PM PST · by Fred Nerks · 9 replies · 891+ views
    Sky Tonight website ^ | January 10, 2007 | Robert Naeye
    This false-color composite of the triple quasar system was made using a combination of Keck Observatory's and the European Very Large Telescope's visible and infrared data. S. G. Djorgovski and colleagues, Caltech, and EPFLOf all the known objects known in the universe, quasars probably deserves the most superlatives. These blazing cosmic beacons pack the energy of an entire galaxy’s worth of stars into a volume of space the size of our solar system. Until now, astronomers have found about 100,000 of these extraordinary objects, which are fueled by supermassive black holes devouring large clumps of matter. Most quasars are solitary...
  • Apparent Concentrations of Galaxies Puzzles Astronomers

    08/03/2006 2:56:18 PM PDT · by NinoFan · 37 replies · 959+ views
    Space.com ^ | July 31, 2006 | SPACE.COM staff
    New observations of galaxies reveal perplexing concentrations in certain directions, astronomers said today. Galaxies along the sight-lines toward distant explosive gamma-ray bursts appear to be four times as abundant as in the directions of quasars. Gamma-ray bursts are massive eruptions of dying stars. Quasars are constantly bright objects are thought to involve supermassive black holes surrounded by developing galaxies. There is no known reason why foreground galaxies should have any association with these background light sources, researchers said. "The result contradicts our basic concepts of cosmology, and we are struggling to explain it," said Jason X. Prochaska, associate professor of...
  • A Stroll Through the Lyman-Alpha Forest!

    02/19/2004 1:54:19 PM PST · by vannrox · 19 replies · 5,272+ views
    Alternate View Column AV-116 ^ | 08/06/2002 | by John G. Cramer
     As the author of these columns describing cutting edge physics and astronomy, I get quite a few letters and E-mail from readers who are more interested in ?over-the-edge physics and astronomy?.  One recurring theme is various alternatives to the standard model of Big Bang cosmology.  Perhaps the universe is not expanding; it?s just that light ?gets tired? on its path from far away and loses some of its energy.  Perhaps quasars are closer than we think, particularly since some of them appear to be linked to closer galaxies.  Perhaps relativity is wrong, and it?s the speed of light that is...
  • Astronomy Picture of the Day 12-15-02

    12/14/2002 9:26:45 PM PST · by petuniasevan · 12 replies · 324+ views
    NASA ^ | 12-15-02 | Robert Nemiroff and Jerry Bonnell
    Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 December 15 A Network of Microlensing Caustics Credit & Copyright: Joachim Wambsganss (Ap. Inst. Potsdam) Explanation: A virtual sky map like this would be of interest to astronomers studying gravitational microlensing. In microlensing, the gravity of stars near the line of sight can act to magnify the light of background objects such as distant stars, or quasars. Nowhere is this magnification greater than near a gravitational lensing...
  • Astronomy Picture of the Day 10-12-02

    10/12/2002 2:05:56 PM PDT · by petuniasevan · 3 replies · 342+ views
    NASA ^ | 10-12-02 | Robert Nemiroff and Jerry Bonnell
    Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 October 12 Chandra Deep Field Credit: Riccardo Giacconi et al., JHU, AUI, NASA Explanation: Officially the Chandra Deep Field - South, this picture represents the deepest ever x-ray image of the Universe. One million seconds of accumulated exposure time with the orbiting Chandra X-ray Observatory went in to its making. Concentrating on a single, otherwise unremarkable patch of sky in the constellation Fornax, this x-ray image corresponds...
  • Astronomy Picture of the Day 3-09-02

    03/11/2002 12:14:08 AM PST · by petuniasevan · 318+ views
    NASA ^ | 3-09-02 | Robert Nemiroff and Jerry Bonnell
    Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 March 9 A Quasar Portrait Gallery Credit J. Bahcall (IAS, Princeton), M. Disney (Univ. Wales), NASA Explanation: Quasars (QUASi-stellAR objects) lie near the edge of the observable Universe. Discovered in 1963, astronomers were astounded that such objects could be visible across billions of light-years, as this implies they must emit prodigious amounts of energy. Where does the energy come from? Many believe the quasar's central engine is...
  • Astronomy Picture Of The Day 3-11-02

    03/10/2002 11:32:55 PM PST · by petuniasevan · 2 replies · 267+ views
    NASA ^ | 03-11-02 | Robert Nemiroff and Jerry Bonnell
    Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 March 11 The 100-Meter Green Bank Radio Telescope Credit: NRAO, NSF Explanation: The largest single-dish fully steerable radio telescope began operation in 2000 August in Green Bank, West Virginia, USA. Dedicated as the Robert C. Byrd Green Bank Telescope, the device weighs over 30 times more than the Statue of Liberty, and yet can point anywhere in the sky more precisely than one thousandth of a degree....